The answer to 'irrigation system has weeds' is that weeds can grow in and around your irrigation system due to a few common causes. Leaks or excess moisture in the system can create ideal conditions for weeds to thrive. Additionally, if the irrigation heads are not properly adjusted or the system is not maintained, weeds can take root in the disturbed soil around the sprinklers.
The main symptoms of weeds in your irrigation system are visible weeds growing around the sprinkler heads, reduced water pressure or coverage, and a generally unkempt appearance of your landscaping. To address this issue, you'll need to inspect the system, identify and repair any leaks, and properly maintain the irrigation heads and surrounding area.